US2753044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for extruding thin-walled tubes
Assignee: Schloemann AG
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Filing: 1952-05-22
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Granted: 1956-07-03
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Expires: 1972-05-22
Abstract
No abstract record available.
Inventors
- 👤 Haendeler Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:10
CPC Classifications
B; B21; B21C; B21C25/00; B21C25/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A TOOL FOR THE EXTRUSION OF THIN-WALLED PIPES OF LIGHT METAL, PARTICULARLY FOR JACKETING OF CABLES, COMPRISING AN EXTRUSION CHAMBER, A MANDREL AND A MATRIX, SAID MATRIX HAVING A RELATIVELY NARROW ANNULAR RIM PORTION PROTRUDING AXIALLY TOWARD SAID MANDREL, SAID RIM PORTION AND SAID MANDREL TOGETHER DEFINING AN ANNULAR EXTRUSION ORIFICE, SAID EXTRUSION CHAMBER HAVING WALLS PARTIALLY DEFINED BY THE COOPERATING SURFACES OF SAID MANDREL AND MATRIX, SAID WALLS CONVERGING GENERALLY TOWARD SAID EXTRUSION ORIFICE IN SUCH MANNER THAT DURING THE EXTRUSION OPERATION SUBSTANTIALLY ALL OF THE METAL IN SAID EXTRUSION CHAMBER IN APPROACHING SAID EXTRUSION ORIFICE FLOWS ONLY IN A DIRECTION HAVING A SUBSTANTIALLY COMPONENT OF FLOW AXIALLY OF SAID MANDREL AND MATRIX.
Claim 2
Dependent Claim
114 words
A TOOL FOR THE EXTRUSION OF THIN-WALLED PIPES OF LIGHT METAL, PARTICULARLY FOR JACKETING OF CABLES, COMPRISING AN EXTRUSION CHAMBER, A MANDREL AND A MATRIX, SAID MATRIX HAVING A RELATIVELY NARROW ANNULAR RIM PORTION PROTRUDING AXIALLY TOWARD SAID MANDREL, SAID RIM PORTION AND SAID MANDREL TOGETHER DEFINING AN ANNULAR EXTRUSION ORIFICE, SAID EXTRUSION CHAMBER HAVING WALLS PARTIALLY DEFINED BY THE COOPERATING SURFACES OF SAID MANDREL AND MATRIX, SAID WALLS CONVERGING GENERALLY TOWARD SAID EXTRUSION ORIFICE IN SUCH MANNER THAT DURING THE EXTRUSION OPERATION SUBSTANTIALLY ALL OF THE METAL IN SAID EXTRUSION CHAMBER IN APPROACHING SAID EXTRUSION ORIFICE FLOWS ONLY IN A DIRECTION HAVING A SUBSTANTIALLY COMPONENT OF FLOW AXIALLY OF SAID MANDREL AND MATRIX.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-03 | 1960-01-02 | 1960-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-03 | 1964-01-02 | 1964-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-03 | 1968-01-02 | 1968-07-03 | $7700.00 | Window Closed / Lapsed |